You may not have heard of anyone assuming an existing mortgage for over thirty years and didn't know they were even possible any longer. The reason is simple, it didn't make financial sense but now that interest rates are increasing, it may be an opportunity for some homebuyers.
Conventional loans added clauses to mortgages back in the early 80's that gave the noteholder the right to raise the interest rate if a loan was assumed, as well as require the new buyer to qualify for the loan. This essentially ended the practice of assuming conventional mortgages.
Then, in the late 80's, FHA and VA mortgages did impose the right to qualify the new buyers, but the big difference was that the mortgage rate would remain the same as the original borrower. Even so, it still effectively ended the assumptions of FHA and VA mortgages because rates on mortgages trended down for the next thirty years.
There was really no benefit to assume a mortgage that still required qualifying because it was possible to obtain a new mortgage with a lower rate. Generations of buyers have never even contemplated assuming a mortgage but now, in 2022, it might well be an alternative that will lower the cost of buying a home.
Mortgage rates hit a bottom in early 2021 and have been increasing since, this year especially.
Since qualifying is required for assuming an FHA or VA mortgage and only owner-occupants are eligible, you might be asking what are the benefits? If the interest rate on the existing mortgage is less than the rate on a new mortgage, there could be a savings.
In addition to that, there are fewer closing costs involved on assumptions of FHA and VA mortgages than originating new mortgages. Another benefit is that assuming an existing mortgage will be further into the amortization schedule than a new one which means equity-buildup occurs faster. And finally, lower interest rate loans amortize faster than higher rate loans.
The rub in this situation is that many buyers don't have enough money to purchase an equity but there is a remedy for that. Let's assume the buyer was considering a 90% conventional loan. If they identified a home with an assumable mortgage, they could put the same 10% down payment in cash, subtract the existing mortgage balance from what would be the 90% new mortgage and secure a second mortgage for the difference.
There are lenders that make this type of loan and buyers need to shop and compare rates and fees on them just like they would if they were getting a new first mortgage. Your agent can suggest lenders for second mortgages.
Most search filters on portal websites do not include assumable mortgages. You will need to rely on your agent to ferret them out. If the agent you are working with hasn't suggested assumptions, it may be that they are unaware of their existence.